View Full Version : Best FTDI circuit for Propeller?

Nick McClick
06-03-2010, 12:37 AM
I'm working with the FTDI232RL and the Prop. I've done a proto and everything is checking out - I implemented it in the same way the DLP-Prop (http://www.ftdichip.com/Products/EvaluationKits/DLP-PROP.htm) implements it. But I wanted to get a second opinion on the FTDI portion of the circuit;
(full schematic is attached)

I'm not sure what causes reset problems on the FTDI circuit on the Protoboard, but will this circuit have the same problems?

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06-03-2010, 12:47 AM
You may want to consider adding an SN74LVC2G07 inline with Rx/Tx to remedy the reset issues. See the following thread for details.


An inexpensive alternative is a jumper on DTR, which could be removed when not programming.

Post Edited (DynamoBen) : 6/2/2010 5:52:41 PM GMT

Nick McClick
06-03-2010, 12:58 AM
That's the thread I was looking for - thanks.

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Bobb Fwed
06-03-2010, 05:08 AM
I just went through all this too. Check out my solution at the bottom of this page: http://forums.parallax.com/showthread.php?p=910039

April, 2008: when I discovered the answers to all my micro-computational-botherations!

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String Manipulation Library (http://obex.parallax.com/objects/543/) - Don't allow strings to be the bane of the Propeller, bend them to your will!
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